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Consider the following types of modulation: 1. Amplitude modulation 2. Frequency modulation 3. Phase modulation 4. Pulse modulation Which of the above modulation are used for telecasting TV programs?
A source produces binary data at the rate of 10 kbps. The binary symbols are represented as shown in the figure.
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The source output is transmitted using two modulation schemes, namely Binary PSK (BPSK) and Quadrature PSK (QPSK). Let and B2 be the bandwidth requirements of BPSK and QPSK respectively. Assuming that the bandwidth of the above rectangular pulses is 10 kHz, B1 and B2 are
Consider the following statements regarding modulation : 1. The communication systems, where a weak signal is transmitted by the use of a modulation is essential in carrier signal. 2. When the frequency of the high frequency signal is varied in accordance with the intensity of the low-frequency weak signal, the modulation is said to be frequency modulation. 3. The process of recovering original baseband signal from the modulated signal is called phase modulation. Which of the above statements are correct ? 
Statement (I): M-ary PSK can be used to transit digital data over a non-linear bandpass channel, whereas M-ary QAM requires the use of a linear channel. Statement (II): M-ary PSK and M-ary QAM are examples of non-linear modulation.
The modulation index of an FSK signal is similar to modulation index of ________
FSK modulation is attributed to the use of __________ frequencies unlike ASK modulation.
BER of FSK modulation scheme is ________ as/to the ASK modulation scheme.
ASK, PSK, FSK, and QAM are examples of _____ encoding.
Coherent PSK and non coherent orthogonal FSK have a difference of ______ in PB.
Eight level FSK and binary PSK yields an equivalent sensitivity.